Optimize images

.eleventy.js

@@ -65,11 +65,13 @@ module.exports = function(eleventyConfig) {
     .use(markdownItAttrs)
     .use(markdownItEleventyImg, {
       imgOptions: {
+        widths: [75, 150, 300, 600, 900, 1100],
         outputDir: path.join("dist", "img"),
       },
       globalAttributes: {
         loading: "lazy",
         decoding: "async",
+        sizes: "100vw",
       },
     });
   eleventyConfig.setLibrary("md", markdownLibrary);